'is not' or '!='A newbie question to you; what is the difference between statements
like:
if x is not None:
and
if x != None:
Without any context, which one should be preferred?
IMHO, the latter is more readable.
On 2014-08-18 21:35, ElChino wrote:
> A newbie question to you; what is the difference between statements
> like:
> if x is not None:
> and
> if x != None:
>
> Without any context, which one should be preferred?
> IMHO, the latter is more readable.
>
"x == y" tells you whether x and y refer to objects that are equal.
"x is y&qu...

'^=' and '~='?Hello,
What is the difference between '^=' and '~='?
Thanks,
Duckhye
...

replacing '/' with '\\'I have a MKS ksh shell script running on a Windows box. In some scripts
I have to convert a UNIX filename into a DOS filename, that is replace
the '/' with '\\'. For example, replace /opt/siips/archive/text.dat
with \\opt\\siips\\archive\\text.dat.
I've tried using sed like $FILE='echo $FILE|sed "s/\//\\\/g"' which
got me \opt\siips\archive\text.dat. It's close but I still need the
second \.
Does anyone have any suggestion? Or tell me where I've gone wrong?
Thanks
-- Steffen
On 9 Dec 2004 20:14:21 -0800, sajohn52@yahoo.com
<sajohn52@yahoo....

replacement for '{' and '}' ?
I am still playing around with what kind of syntax I would like to
mark up my documents.
Are there equivalent long substitutes for { and } when they are not
used to describe arguments to functions? Something like \begin{group}
and \end{group}.
In other words, if I could force myself to write, say, \begin{group}
\it ... \end{group} instead of {\it ... }, then I believe I could
identify from the markup context what is an argument that belongs to a
just invoked macro and what is text. {Of course, in this context,
\textit{...} would be better.} No more ambiguity whether a in
\myfunction{a} i...

Replacing ',' with '.'Hello,
I have a huge amount of numbers in a .txt file. The numbers are in the form 2,43252e+1. I need to replace the , with . How should I do this? I'd prefer some import method that does this during the import procedure.
-Janne
Hi,
I guess you import the data as text and convert it then to numbers.
Try 'strrep' before you convert the text to numbers.
Tobias
Jake the Snake schrieb:
> Hello,
>
> I have a huge amount of numbers in a .txt file. The numbers are in the form 2,43252e+1. I need to replace the , with . How should I do this? I'd prefer some import method...

'''''''''''''The Running Update/Append Queries Using VBA code Ordeal''''''''''''''Hello fellow programmers,
I am trying to run an append/update query from code, a command button
on a form initiates the queries.
the format i am using is;
_____________________________________________________
SELECT "criteria"
FROM "criteria"
WHERE "criteria"
UPDATE/APPEND "field selections"
RecordSource "qryExample" = above text strings"
_______________________________________________________________________
When i am running a SELECT query in this manner it works fine with no
problems, and accepts the values of specified linked for...

'''''''''''''The Running Update/Append Queries Using VBA code Ordeal'''''''''''''' #2Hi,
Thanks for ur help there HJ.
I know how to do the tasks you specified there.
I would like for the update query to use field values from some of the
fields on the form (frmInvoices) such as InvoiceNumber, DateFrom,
DateTo. My problem is that an append/update query can't find the
values in the open Form (frmInvoices) when I specify them as;
[Forms]![frmInvoices]![InvoiceNumber]
a select query has no problem finding the field values on a form.
please help.
Aaron
Hi Aaron,
Could you post the entire code that you are having trouble with? Now it is
not possible to see what goes wron...

if str_mo not in ('','.') and str_da not in ('','.') and str_yy not in ('','.') Any shorter ?Hi, there.
=20
I'm just curious if it ever dawned on anybody how to abbreviate this
line :
if str_mo not in ('','.') and str_da not in ('','.') and str_yy not in
('','.')=20
=20
Igor Kurbeko
Clinical Programmer Analyst
678 336 4328
ikurbeko@atherogenics.com
=20
no brain no pain
=20
how about:
if not (str_mo in ('','.') or str_da in ('','.') or str_yy in
('','.'))
OR
if not (missing(str_mo) or missing(str_da) or missing(str_yy))
Eric
On 22 Oct 03 21:13:37 GMT, ikurbeko@ATHER...

error: expected '=', ',', ';', 'asm' or '__attribHi
I'm trying to compile an ADC Driver & come acrosss the following error.
I've no experience writing drivers before, and hence have no clue how
to fix it.
Hope someone out there has encountered the problem & suggesst a fix for
the same.
The Error is I get is :
qadc.c: At top level:
qadc.c:97: error: expected '=', ',', ';', 'asm' or '__attribute__'
before 'qadc_read'
make: *** [qadc.o] Error 1
[root@localhost qadc]#
###########################################################################
ADC Driver Code
####################...

error: expected '=', ',', ';', 'asm' or '__attribHi
I'm trying to compile an ADC Driver & come acrosss the following error.
I've no experience writing drivers before, and hence have no clue how
to fix it.
Hope someone out there has encountered the problem & suggesst a fix for
the same.
The Error is I get is :
qadc.c: At top level:
qadc.c:97: error: expected '=', ',', ';', 'asm' or '__attribute__'
before 'qadc_read'
make: *** [qadc.o] Error 1
[root@localhost qadc]#
###########################################################################
ADC Driver Code
##...

Re: '^=' and '~='?Duckhye,
According to the doc ( http://xrl.us/befwjx ) they, and one other set of
characters, and the mnemonic 'NE' all represent 'NOT EQUAL'.
Art
-------
On Wed, 11 Feb 2009 16:52:40 -0600, Duck-Hye Yang <dyang@CHAPINHALL.ORG>
wrote:
>Hello,
>What is the difference between '^=' and '~='?
>
>Thanks,
>Duckhye
...

Does '!=' equivelent to 'is not'I'm a bit confusing about whether "is not" equivelent to "!="
if a != b:
...
if a is not b:
...
What's the difference between "is not" and "!=" or they are the same thing?
pirata wrote:
> I'm a bit confusing about whether "is not" equivelent to "!="
>
> if a != b:
> ...
>
> if a is not b:
> ...
>
>
> What's the difference between "is not" and "!=" or they are the same thing?
No, they are not the same thing. == and != test to see if the *value* of
two ...